Manuel

Thank you very much for your advice shakaho, I'm relieved it's an injury and not a disease, I've done a 50% water change today and will repeat over the next few days the fish is looking fine at the moment. We bought this fish about 6 months ago, it was about 5cm long at the time of purchase. Sounds like we will have to look at getting them a bigger home as they grow, thanks again for the help. And thanks fantailfan1

Test Results for the Following: * Ammonia Level(Tank) no testing done * Nitrite Level(Tank) * Nitrate level(Tank) * Ammonia Level(Tap) * Nitrite Level(Tap) * Nitrate level(Tap) * Ph Level, Tank (If possible, KH, GH and chloramines) * Ph Level, Tap (If possible, KH, GH and chloramines) Other Required Info: * Brand of test-kit used and whether strips or drops? * Water temperature? room temp about 25oC * Tank size (how many gals.) and how long has it been running? 42 gallons, 1 year * What is the name and "size of the filter"(s)? Aquaone AR-850 tank with filters in the lid * How often do you change the water and how much? every 2 weeks, 25% * How many days ago was the last water change and how much did you change? 5 * How many fish in the tank and their size? 4, approx 12cm * What kind of water additives or conditioners? none * What do you feed your fish and how often? granules and flakes twice a day, occasionally peas * Any new fish added to the tank? no * Any medications added to the tank? no * List entire medication/treatment history for fish and tank.Please include salt, Prazi, PP, etc and the approximate time and duration of treatment. none * Any unusual findings on the fish such as "grains of salt," bloody streaks, frayed fins or fungus? none other than the sore mentioned * Any unusual behavior like staying at the bottom, not eating, etc.? none

Hi, looking for some help for my yellow goldfish... A sore on its side appeared today, there appears to be a couple of scales missing, a pink mark of about 3mm in diameter, the surrounding scales are discoloured black, any ideas if it is an injury or something more sinister? It's in a 42 gallon tank with 3 other goldfish and 4 zebra danios, 25% water changes every 2 weeks using rainwater. https://www.dropbox.com/s/uj6gc3gjohasaun/Yellow.jpeg?dl=0